body{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* cursor: none; */

}
html {
  /* cursor: none; */
}

.pointer{
  /* z-index: 999; */
  width: 32px;
  height: 32px;
  position: fixed;
  /* background-color: aqua; */
  margin-top: -5px;
  margin-left: -16px;
  /* background: url("../img/向上箭头.png"); */
}
.pointer img{
  width: 100%;
  height: 100%;
}
.pointer video{
  width: 100%;
  height: 100%;
}